I have a Modulus Q5 with what appears to be a problem with the preamp. When I try to boost the mids or highs, there almost is no audible difference than when the knobs are set in the middle, flat setting. When I cut the mids or highs, there's no problem and they cut just fine. On the bass knob, I don't have this problem. It boosts, and there is a definite audible difference. My question is, what would cause this problem? Is it a problem with the preamp itself or maybe the pots? The electronics are Bartolini and I have the NTMB preamp. I've tried changing the batteries, but that didn't seem do do anything. Any input would be much appreciated. *If this thread should be moved, please feel free. I wasn't really sure where it should belong, but I figured this would be the highest visability catagory.